From: Chengguang Xu <cgxu519@mykernel.net>
To: miklos@szeredi.hu, jack@suse.cz, amir73il@gmail.com
Cc: linux-unionfs@vger.kernel.org, linux-fsdevel@vger.kernel.org,
linux-kernel@vger.kernel.org,
Chengguang Xu <charliecgxu@tencent.com>
Subject: [RFC PATCH V6 6/7] ovl: introduce ovl_sync_upper_blockdev()
Date: Mon, 22 Nov 2021 11:00:37 +0800 [thread overview]
Message-ID: <20211122030038.1938875-7-cgxu519@mykernel.net> (raw)
In-Reply-To: <20211122030038.1938875-1-cgxu519@mykernel.net>
From: Chengguang Xu <charliecgxu@tencent.com>
Introduce new helper ovl_sync_upper_blockdev() to sync
upper blockdev.
Signed-off-by: Chengguang Xu <charliecgxu@tencent.com>
---
fs/overlayfs/super.c | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/fs/overlayfs/super.c b/fs/overlayfs/super.c
index 12acf0ec7395..ccffcd96491d 100644
--- a/fs/overlayfs/super.c
+++ b/fs/overlayfs/super.c
@@ -258,6 +258,16 @@ static void ovl_put_super(struct super_block *sb)
ovl_free_fs(ofs);
}
+static int ovl_sync_upper_blockdev(struct super_block *sb, int wait)
+{
+ if (!sb->s_bdev)
+ return 0;
+
+ if (!wait)
+ return filemap_flush(sb->s_bdev->bd_inode->i_mapping);
+ return filemap_write_and_wait_range(sb->s_bdev->bd_inode->i_mapping, 0, LLONG_MAX);
+}
+
/* Sync real dirty inodes in upper filesystem (if it exists) */
static int ovl_sync_fs(struct super_block *sb, int wait)
{
--
2.27.0
next prev parent reply other threads:[~2021-11-22 3:16 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-11-22 3:00 [RFC PATCH V6 0/7] implement containerized syncfs for overlayfs Chengguang Xu
2021-11-22 3:00 ` [RFC PATCH V6 1/7] ovl: setup overlayfs' private bdi Chengguang Xu
2021-11-26 8:51 ` Jan Kara
2021-11-22 3:00 ` [RFC PATCH V6 2/7] ovl: mark overlayfs inode dirty when it has upper Chengguang Xu
2021-11-26 9:10 ` Jan Kara
2021-11-26 13:06 ` Chengguang Xu
2021-11-26 14:32 ` Jan Kara
2021-11-22 3:00 ` [RFC PATCH V6 3/7] ovl: implement overlayfs' own ->write_inode operation Chengguang Xu
2021-11-26 9:14 ` Jan Kara
2021-11-26 13:09 ` Chengguang Xu
2021-11-22 3:00 ` [RFC PATCH V6 4/7] ovl: set 'DONTCACHE' flag for overlayfs inode Chengguang Xu
2021-11-26 9:20 ` Jan Kara
2021-11-22 3:00 ` [RFC PATCH V6 5/7] fs: export wait_sb_inodes() Chengguang Xu
2021-11-26 9:20 ` Jan Kara
2021-11-22 3:00 ` Chengguang Xu [this message]
2021-11-26 9:21 ` [RFC PATCH V6 6/7] ovl: introduce ovl_sync_upper_blockdev() Jan Kara
2021-11-22 3:00 ` [RFC PATCH V6 7/7] ovl: implement containerized syncfs for overlayfs Chengguang Xu
2021-11-22 7:40 ` Amir Goldstein
2021-11-26 5:03 ` Chengguang Xu
2021-11-26 9:25 ` Jan Kara
2021-11-27 9:26 ` 回复:[RFC PATCH V6 0/7] " Chengguang Xu
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